EP2926092B1 - Redundante messung der position einer störung im lichtleiter - Google Patents

Redundante messung der position einer störung im lichtleiter Download PDF

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Publication number
EP2926092B1
EP2926092B1 EP14701304.9A EP14701304A EP2926092B1 EP 2926092 B1 EP2926092 B1 EP 2926092B1 EP 14701304 A EP14701304 A EP 14701304A EP 2926092 B1 EP2926092 B1 EP 2926092B1
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EP
European Patent Office
Prior art keywords
signal
event
optical waveguide
arrangement
linearly structured
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14701304.9A
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German (de)
English (en)
French (fr)
Other versions
EP2926092A1 (de
Inventor
Bernhard Evers
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Siemens AG
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Siemens AG
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
    • G01D5/35354—Sensor working in reflection

Definitions

  • the invention relates to an arrangement for monitoring a linearly structured device with an optical waveguide strand extending along the linearly structured device, which is provided at its two ends with a respective light-emitting and light-receiving device with evaluation device, wherein the evaluation devices at an event on the linearly structured Device give an event signal.
  • a linearly structured device is for example a railway track or an electrical power transmission line.
  • An optical waveguide strand extending along the linearly structured device has two optical waveguides acting as sensors, which are laid parallel to one another.
  • a light-emitting and light-receiving device is provided at the opposite ends of the two optical waveguides in each case in each case in each case a light-emitting and light-receiving device is provided in order to be able to detect the event acting upon evaluation of optical backscattering on the linearly structured device;
  • Each of these two light-transmitting and light-receiving devices is assigned an evaluation device, each of which is formed by a processor.
  • the invention has the object of providing an arrangement of the type described in such a way that it can be reliably monitored with her the determination of safety-related functions on a linearly structured device with an optical fiber strand.
  • the evaluation means are formed according to the invention in the arrangement of the type specified above so that they deliver at their outputs as an event signal indicating the distance to the location of the event distance signal, and the outputs of the evaluation are connected to a common summing in which the range signals are added to obtain a summation signal; the summing element is followed by a test device which compares the summation signal with a reference signal and emits an error message at a difference between summation signal and reference distance signal.
  • An essential advantage of the arrangement according to the invention is that with it the determination of safety-relevant functions of the linearly structured device by means of two independent monitoring operations on the optical fiber strand in a simple manner by means of a Summing member for the output variables of the monitoring operations to form the summation signal takes place, because as output variables respectively the distance to the location of the event indicating distance signals are used.
  • it then only requires one test device in order to compare the summation signal with the reference signal and if necessary to generate the error message from it. The error message then indicates that the arrangement according to the invention has detected a fault in the determination of safety-relevant functions of the linearly structured device.
  • the test device has a memory module in which a reference signal corresponding to the entire length of the optical fiber strand is stored as reference signal. The prerequisite for this is that the entire length of the optical fiber strand is known or has been determined.
  • test device has a memory unit in which the respective current summation signal is stored as a reference signal for comparison with a subsequently formed summation signal.
  • a determination of the length of the optical fiber strand is not required here, because measurement results of successive monitoring operations are compared with each other.
  • the optical fiber strand may comprise two optical waveguides, and there may be light-emitting and light-receiving devices operating at the same frequency. This has the advantage that light-emitting and light-receiving devices of the same type can be used.
  • the optical fiber strand has an optical waveguide, and light emitting and light receiving devices with different operating frequency are present. In this case, advantageously only a single optical waveguide is needed.
  • the linearly structured device can be completely different in nature; for example, it can be a pipeline.
  • the linearly structured device is a railway track. This, for example, opens up the possibility of reliably providing track release messages using an optical fiber strand and also of carrying it out continuously. In conventional technology, a track vacancy is only partially possible. Even train separations can be detected with relatively little effort. It is particularly advantageous if the summing element and the test device are designed to be secure.
  • the invention further relates to a method for operating a linearly structured device with an optical waveguide strand extending along the linearly structured device, which is provided at its two ends with a respective light-emitting and light-receiving device with evaluation device, wherein the evaluation devices at an event in give the linear structured device at their outputs an event signal.
  • a method for operating a linearly structured device with an optical waveguide strand extending along the linearly structured device which is provided at its two ends with a respective light-emitting and light-receiving device with evaluation device, wherein the evaluation devices at an event in give the linear structured device at their outputs an event signal.
  • the distance signals indicating the location of the event are generated as event signals and the distance signals are added to obtain a summation signal; the summation signal is compared with a reference signal, and an error message is generated at a difference between the summation signal and the reference distance signal.
  • Fig. 1 shows a linearly structured device, a railway track 1, next to an optical fiber strand 2 is laid.
  • the optical fiber strand 2 consists of a first optical waveguide 3, which is connected to a first light-emitting and light-receiving device 4.
  • a second optical waveguide 5 of the optical fiber strand 2 extends adjacent to the first optical waveguide 3 and communicates with a second light transmitting and receiving device 6 in connection.
  • the optical waveguides 3 and 5 can also be laid in the railway track 1.
  • Each light-emitting and light-receiving device 4 and 6 is associated with an evaluation device 7 and 8, which are each designed so that they emit at their outputs 9 and 10 each have an electrical distance signal Se1 and Se2.
  • the light-emitting and light-receiving device 4 and 6 and evaluation 7 and 8 are formed in a manner not to be described here, that can be monitored with them functions of linearly structured device or the operation on the railway track.
  • an unillustrated rail vehicle is located at a position 11 on the railway track 1, then it has a distance L1 from the location of the first light emitting and receiving device 4 and a distance L2 from the location of the second light emitting and receiving device 6.
  • the first and second Light emitting and light receiving device 4 and 6 emitted light is therefore reflected at the location 11, respectively, because the rail vehicle causes a inhomogeneity in the optical waveguides 3 and 5 at location 11 by the sound pressure waves generated by it.
  • the reflected light is detected via the two optical waveguides 3 and 5 in each case by the light-emitting and light-receiving devices 4 and 6 and in the associated evaluation device 7 and 8 are converted into the distance signals Se1 and Se2 in a manner of interest.
  • the size of the distance signals Se1 and Se2 corresponds to the two distances L1 and L2.
  • a summer 12 is connected, in which from the two distance signals Se1 and Se2 a summation signal Ss is formed; This summation signal Ss arrives at an output 13 and is transmitted to a test device 14.
  • the summation signal Ss is compared with a reference signal which is stored as a reference removal signal Sbe in a memory module, not shown, the test device 14 and corresponds in size to the entire length of the optical fiber strand 2.
  • a comparator 15 shown only schematically the reference distance signal Sbe is compared with the summation signal Ss. If a predetermined comparison tolerance - which is provided, for example, because of a not exactly parallel course of the optical waveguides 3 and 5 - exceeded, then an error message Sf is generated at the output of the test device 14 and thus signals, the time-parallel carried out monitoring of the functions of the linearly structured device is faulty and thus the railway operation on the track 1 is not safely controlled.
  • a reference signal Sba derived from the summation signal Ss in the following manner (in Fig. 1 inserted in parentheses): If a summation signal Ss is formed during operation of the arrangement according to the invention, then this summation signal is stored in a memory unit, not shown, of the test device 14. Occurs in a subsequent monitoring cycle to another summation signal, which is usually a change in location of the rail vehicle is based on the railway track 1, then this further summation signal is compared with the derived reference signal Sba and generates the error message in case of deviations.
  • the embodiment according to Fig. 2 is different from that Fig. 1 First in so far as the extending next to the railway track 1 optical fiber strand consists of a single optical fiber 20, at both ends 21 and 22 each have a light emitting and light receiving devices 23 and 24, each with an associated evaluation device 25 and 26 is provided.
  • the light-emitting and light-receiving devices 23 and 24 have different operating frequencies here. Otherwise, the structure and operation of this embodiment with the after Fig. 1 identical, so that for the remaining components of the embodiment according to Fig. 2 with the after Fig. 1 the same reference numerals are used.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
EP14701304.9A 2013-01-31 2014-01-09 Redundante messung der position einer störung im lichtleiter Active EP2926092B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013201626.3A DE102013201626A1 (de) 2013-01-31 2013-01-31 Anordnung mit einer linear strukturierten Einrichtung und Verfahren zum Betreiben dieser Einrichtung
PCT/EP2014/050300 WO2014117982A1 (de) 2013-01-31 2014-01-09 Redundante messung der position einer störung im lichtleiter

Publications (2)

Publication Number Publication Date
EP2926092A1 EP2926092A1 (de) 2015-10-07
EP2926092B1 true EP2926092B1 (de) 2017-06-28

Family

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Application Number Title Priority Date Filing Date
EP14701304.9A Active EP2926092B1 (de) 2013-01-31 2014-01-09 Redundante messung der position einer störung im lichtleiter

Country Status (6)

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EP (1) EP2926092B1 (zh)
CN (1) CN104919285B (zh)
DE (1) DE102013201626A1 (zh)
ES (1) ES2641754T3 (zh)
HK (1) HK1210520A1 (zh)
WO (1) WO2014117982A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108692746B (zh) * 2017-04-05 2022-07-12 中兴通讯股份有限公司 传感监测终端、传感监测系统和传感监测方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080232242A1 (en) * 2004-03-31 2008-09-25 Peter Healey Evaluating the Position of a Disturbance
DE102009060727A1 (de) * 2009-12-21 2011-06-22 Siemens Aktiengesellschaft, 80333 Verfahren und Einrichtung zum Überwachen der Vollständigkeit eines spurgebundenen Zugverbandes

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
GB1497995A (en) 1976-04-13 1978-01-12 Standard Telephones Cables Ltd Fibre optic acoustic monitoring arrangement
US4529876A (en) * 1983-12-27 1985-07-16 Walker Clifford G Integrated optics transducer
SU1742615A1 (ru) * 1987-05-05 1992-06-23 Центральный научно-исследовательский геологоразведочный институт цветных и благородных металлов Способ контрол состо ни длинномерного объекта и устройство дл его осуществлени
US5355208A (en) * 1992-06-24 1994-10-11 Mason & Hanger National, Inc. Distributed fiber optic sensor for locating and identifying remote disturbances
JP4869480B2 (ja) * 1998-12-18 2012-02-08 フューチャー ファイバー テクノロジーズ ピーティーワイ リミテッド 対向伝播信号法を用いて構造を監視しイベントの位置を見つけるための装置及び方法
US6753520B2 (en) * 2001-09-17 2004-06-22 Centro De Investigacion Cientifica Y De Educacion Superior De Ensenada (Cicese) Fiber optic sensor with transmission/reflection analyzer
ES2354946T3 (es) * 2006-04-21 2011-03-21 Fondazione Torino Wireless Sistema y método para medir distancias, desplazamientos y acciones mecánicas.
GB2445364B (en) * 2006-12-29 2010-02-17 Schlumberger Holdings Fault-tolerant distributed fiber optic intrusion detection
WO2009152841A1 (de) * 2008-06-18 2009-12-23 Siemens Aktiengesellschaft Anordnung und verfahren zum erzeugen eines fehlersignals
US9784642B2 (en) * 2008-09-23 2017-10-10 Onesubsea Ip Uk Limited Redundant optical fiber system and method for remotely monitoring the condition of a pipeline

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080232242A1 (en) * 2004-03-31 2008-09-25 Peter Healey Evaluating the Position of a Disturbance
DE102009060727A1 (de) * 2009-12-21 2011-06-22 Siemens Aktiengesellschaft, 80333 Verfahren und Einrichtung zum Überwachen der Vollständigkeit eines spurgebundenen Zugverbandes

Also Published As

Publication number Publication date
CN104919285B (zh) 2017-06-09
EP2926092A1 (de) 2015-10-07
DE102013201626A1 (de) 2014-07-31
CN104919285A (zh) 2015-09-16
ES2641754T3 (es) 2017-11-13
HK1210520A1 (zh) 2016-04-22
WO2014117982A1 (de) 2014-08-07

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